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Big Bang theory
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By *yrdwomanWoman
over a year ago
Putting the 'cum' in Eboracum |
Its the speed at which bodies are moving away from us. As we are not the centre of the Universe (although we think we are) then its not a good way of measuring the age of the universe, especially as they speed up the further they get away from us. |
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Recessional velocity is most pertinent to distant galaxies, which (due to Hubble's Law) redshift proportionally to their distance from the Earth. The redshift is usually interpreted as due to recessional velocity, which can be calculated according to the formula:
where is the Hubble constant, is the intervening distance, and is the recessional velocity, generally measured in km/s.
The recessional velocity of a galaxy is usually calculated from the redshift observed in its emitted electromagnetic radiation. The distance to the galaxy is then estimated using Hubble's Law. |
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By (user no longer on site)
over a year ago
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"Its the speed at which bodies are moving away from us. As we are not the centre of the Universe (although we think we are) then its not a good way of measuring the age of the universe, especially as they speed up the further they get away from us."
when you say we, do you mean we, the human race, or we, single women on here? lol |
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By (user no longer on site)
over a year ago
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No idea. And though when I listen to scientific explanations of the Big Bang Theory I can almost follow them, i do always think, "Erm, so something came out of nothing, but there was actually something there to begin with, so, erm, where did the something come from then? Eh? Tell me that?"
I guess it is that leap. Science can only provide theories to be disproved or refined, based on observable phenomena.
I think an elephant with a tortoise on its back sharted into the cosmos. |
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By (user no longer on site) OP
over a year ago
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"No idea. And though when I listen to scientific explanations of the Big Bang Theory I can almost follow them, i do always think, "Erm, so something came out of nothing, but there was actually something there to begin with, so, erm, where did the something come from then? Eh? Tell me that?"
I guess it is that leap. Science can only provide theories to be disproved or refined, based on observable phenomena.
I think an elephant with a tortoise on its back sharted into the cosmos."
oi oi! A discworld fan!! |
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By (user no longer on site)
over a year ago
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"No idea. And though when I listen to scientific explanations of the Big Bang Theory I can almost follow them, i do always think, "Erm, so something came out of nothing, but there was actually something there to begin with, so, erm, where did the something come from then? Eh? Tell me that?"
I guess it is that leap. Science can only provide theories to be disproved or refined, based on observable phenomena.
I think an elephant with a tortoise on its back sharted into the cosmos."
i listen to a science phone in on radio 5 on a thursday morning (try and catch it, very informative)
and the scientist they have on says 'science cannot prove things. science can only DISPROVE things. ie, if you were to say, all swans are white, science cannot prove it, however, it can disprove it by finding a swan of a different colour'
make s ya think lol |
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By (user no longer on site) OP
over a year ago
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"No idea. And though when I listen to scientific explanations of the Big Bang Theory I can almost follow them, i do always think, "Erm, so something came out of nothing, but there was actually something there to begin with, so, erm, where did the something come from then? Eh? Tell me that?"
I guess it is that leap. Science can only provide theories to be disproved or refined, based on observable phenomena.
I think an elephant with a tortoise on its back sharted into the cosmos."
what if Hubble is totally wrong?? |
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By (user no longer on site)
over a year ago
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"No idea. And though when I listen to scientific explanations of the Big Bang Theory I can almost follow them, i do always think, "Erm, so something came out of nothing, but there was actually something there to begin with, so, erm, where did the something come from then? Eh? Tell me that?"
I guess it is that leap. Science can only provide theories to be disproved or refined, based on observable phenomena.
I think an elephant with a tortoise on its back sharted into the cosmos.
what if Hubble is totally wrong?? "
until someone comes up with a theory that disproves him, he will never be wrong |
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By (user no longer on site)
over a year ago
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"Its cryptic questionology from the higher intelligence for ' does anyone have any cake?'"
Not any more. I did. But it was billions of years ago. And that bloody Tortoise stole it, was sick, and vomited up our galaxy. And a swan. |
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By (user no longer on site) OP
over a year ago
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"Its cryptic questionology from the higher intelligence for ' does anyone have any cake?'"
oi cake man! Get off my serious thread. And clear up your crumbs  |
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"No idea. And though when I listen to scientific explanations of the Big Bang Theory I can almost follow them, i do always think, "Erm, so something came out of nothing, but there was actually something there to begin with, so, erm, where did the something come from then? Eh? Tell me that?"
I guess it is that leap. Science can only provide theories to be disproved or refined, based on observable phenomena.
I think an elephant with a tortoise on its back sharted into the cosmos.
what if Hubble is totally wrong?? "
think its a proven fact that things moving away from us emit a red glow, the redder it glows the faster its moving |
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By (user no longer on site) OP
over a year ago
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"No idea. And though when I listen to scientific explanations of the Big Bang Theory I can almost follow them, i do always think, "Erm, so something came out of nothing, but there was actually something there to begin with, so, erm, where did the something come from then? Eh? Tell me that?"
I guess it is that leap. Science can only provide theories to be disproved or refined, based on observable phenomena.
I think an elephant with a tortoise on its back sharted into the cosmos.
what if Hubble is totally wrong?? think its a proven fact that things moving away from us emit a red glow, the redder it glows the faster its moving"
I've just been reading about that |
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"Its cryptic questionology from the higher intelligence for ' does anyone have any cake?'oi cake man! Get off my serious thread. And clear up your crumbs "
apologies 
I should be punished...........  |
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Our whole universe was in a hot dense state,
Then nearly fourteen billion years ago expansion started. Wait...
The Earth began to cool,
The autotrophs began to drool,
Neanderthals developed tools,
We built a wall (we built the pyramids),
Math, science, history, unraveling the mysteries,
That all started with the big bang!
"Since the dawn of man" is really not that long,
As every galaxy was formed in less time than it takes to sing this song.
A fraction of a second and the elements were made.
The bipeds stood up straight,
The dinosaurs all met their fate,
They tried to leap but they were late
And they all died (they froze their asses off)
The oceans and Pangea
See ya wouldn't wanna be ya
Set in motion by the same big bang!
It all started with the big BANG!
It's expanding ever outward but one day
It will pause and start to go the other way.
Collapsing ever inward, we won't be here, it won't be heard
Our best and brightest figure that it'll make an even bigger bang!
Australopithecus would really have been sick of us
Debating how we're here, they're catching deer (we're catching viruses)
Religion or astronomy (Descartes or Deuteronomy)
It all started with the big bang!
Music and mythology, Einstein and astrology
It all started with the big bang!
It all started with the big BANG
|
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By (user no longer on site) OP
over a year ago
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"Its cryptic questionology from the higher intelligence for ' does anyone have any cake?'oi cake man! Get off my serious thread. And clear up your crumbs
apologies
I should be punished........... "
No cake for you |
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By (user no longer on site) OP
over a year ago
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"Our whole universe was in a hot dense state,
Then nearly fourteen billion years ago expansion started. Wait...
The Earth began to cool,
The autotrophs began to drool,
Neanderthals developed tools,
We built a wall (we built the pyramids),
Math, science, history, unraveling the mysteries,
That all started with the big bang!
"Since the dawn of man" is really not that long,
As every galaxy was formed in less time than it takes to sing this song.
A fraction of a second and the elements were made.
The bipeds stood up straight,
The dinosaurs all met their fate,
They tried to leap but they were late
And they all died (they froze their asses off)
The oceans and Pangea
See ya wouldn't wanna be ya
Set in motion by the same big bang!
It all started with the big BANG!
It's expanding ever outward but one day
It will pause and start to go the other way.
Collapsing ever inward, we won't be here, it won't be heard
Our best and brightest figure that it'll make an even bigger bang!
Australopithecus would really have been sick of us
Debating how we're here, they're catching deer (we're catching viruses)
Religion or astronomy (Descartes or Deuteronomy)
It all started with the big bang!
Music and mythology, Einstein and astrology
It all started with the big bang!
It all started with the big BANG
"
I wondered what all the words were. Now I know  |
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the wavelength of light recieved from objects moving away from us at greater speeds gets stretched out and therefore appears to be more red .. hence the red shift a bit like when a fire engine going past us .. the pitch of the sound of the nee naws gets lower .. you may notice this effect if your not too busy trying to perv at the firemen.. anyway .. the speed the stars are moving away from us can be calculated ie the recessional velocity .by the shift to the red of their light |
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"No idea. And though when I listen to scientific explanations of the Big Bang Theory I can almost follow them, i do always think, "Erm, so something came out of nothing, but there was actually something there to begin with, so, erm, where did the something come from then? Eh? Tell me that?"
I guess it is that leap. Science can only provide theories to be disproved or refined, based on observable phenomena.
I think an elephant with a tortoise on its back sharted into the cosmos.
what if Hubble is totally wrong?? think its a proven fact that things moving away from us emit a red glow, the redder it glows the faster its moving
I've just been reading about that "
Some good lectures on youtube, look up Stanford university. |
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By (user no longer on site) OP
over a year ago
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"No idea. And though when I listen to scientific explanations of the Big Bang Theory I can almost follow them, i do always think, "Erm, so something came out of nothing, but there was actually something there to begin with, so, erm, where did the something come from then? Eh? Tell me that?"
I guess it is that leap. Science can only provide theories to be disproved or refined, based on observable phenomena.
I think an elephant with a tortoise on its back sharted into the cosmos.
what if Hubble is totally wrong?? think its a proven fact that things moving away from us emit a red glow, the redder it glows the faster its moving
I've just been reading about that Some good lectures on youtube, look up Stanford university."
thank you |
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By (user no longer on site) OP
over a year ago
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"the wavelength of light recieved from objects moving away from us at greater speeds gets stretched out and therefore appears to be more red .. hence the red shift a bit like when a fire engine going past us .. the pitch of the sound of the nee naws gets lower .. you may notice this effect if your not too busy trying to perv at the firemen.. anyway .. the speed the stars are moving away from us can be calculated ie the recessional velocity .by the shift to the red of their light "
I got that when I read it |
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It's called the phase doppler effect, it's been known for ages - same principle as speed cameras work. They emit electromagnetic radiation and the difference in the phase shift of the reflected waves from the emitted waves is used to calculate the speed.
The velocity of the receding body can be easily calculated from the red shift.
Hubble's law is then used to estimate the distance from this velocity.
Although we might think of bodies/solar systems/galaxies moving away from us, that concept is somewhat meaningless as we are not stationary or epicentral. The whole universe is expanding (see Monty Python song for an excellent overview)and objects are moving away from each other - into what, is one of the great imponderables. |
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"it also explains why your voice is higher pitched when your screaming im coming im coming .then it gets lower afterwards .. or maybe thats different "
That's more slopplar effect than dopplar effect.... |
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Just remember that you're standing on a planet that's evolving
And revolving at nine hundred miles an hour,
That's orbiting at nineteen miles a second, so it's reckoned,
A sun that is the source of all our power.
The sun and you and me and all the stars that we can see
Are moving at a million miles a day
In an outer spiral arm, at forty thousand miles an hour,
Of the galaxy we call the 'Milky Way'.
Our galaxy itself contains a hundred billion stars.
It's a hundred thousand light years side to side.
It bulges in the middle, sixteen thousand light years thick,
But out by us, it's just three thousand light years wide.
We're thirty thousand light years from galactic central point.
We go 'round every two hundred million years,
And our galaxy is only one of millions of billions
In this amazing and expanding universe.
The universe itself keeps on expanding and expanding
In all of the directions it can whizz
As fast as it can go, at the speed of light, you know,
Twelve million miles a minute, and that's the fastest speed there is.
So remember, when you're feeling very small and insecure,
How amazingly unlikely is your birth,
And pray that there's intelligent life somewhere up in space,
'Cause there's bugger all down here |
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By (user no longer on site) OP
over a year ago
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"Ok, so enough Big Bang theory what about gang bang theory (or practice)"
everyone would have to be certified clean and smelling minty fresh. Then I'll join in happily |
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By (user no longer on site) OP
over a year ago
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"It's called the phase doppler effect, it's been known for ages - same principle as speed cameras work. They emit electromagnetic radiation and the difference in the phase shift of the reflected waves from the emitted waves is used to calculate the speed.
The velocity of the receding body can be easily calculated from the red shift.
Hubble's law is then used to estimate the distance from this velocity.
Although we might think of bodies/solar systems/galaxies moving away from us, that concept is somewhat meaningless as we are not stationary or epicentral. The whole universe is expanding (see Monty Python song for an excellent overview)and objects are moving away from each other - into what, is one of the great imponderables."
and the further away they are the faster they move ? |
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By (user no longer on site)
over a year ago
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"its a proven fact that things moving away from us emit a red glow, the redder it glows the faster its moving"
That's tail lights mate. Every galaxy has them. |
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By (user no longer on site)
over a year ago
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"No idea. And though when I listen to scientific explanations of the Big Bang Theory I can almost follow them, i do always think, "Erm, so something came out of nothing, but there was actually something there to begin with, so, erm, where did the something come from then? Eh? Tell me that?"
I guess it is that leap. Science can only provide theories to be disproved or refined, based on observable phenomena.
I think an elephant with a tortoise on its back sharted into the cosmos."
The latest development I recall to deal with the something from nothing idea and the explanation for how ridiculously fine tuned the constants of our universe are (so much so that even if one vale was a teeny bit different, the universe couldn't exist), is the multi-verse theory.
There are lots of parallel universes...all with different variations of constants...this one got the balance 'bang' on...and the rest is...history...and biology and physics and chemistry etc...
I think Dawkins has conceded that where the universe came from may not be answerable - he naturally won't consider intelligent design - it is a pretty tough question though!!
Some fascinating discussions between him and prof Lennox on YouTube.. As well as William lane Craig and Christopher Hutchins on some of this stuff. |
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"It's called the phase doppler effect, it's been known for ages - same principle as speed cameras work. They emit electromagnetic radiation and the difference in the phase shift of the reflected waves from the emitted waves is used to calculate the speed.
The velocity of the receding body can be easily calculated from the red shift.
Hubble's law is then used to estimate the distance from this velocity.
Although we might think of bodies/solar systems/galaxies moving away from us, that concept is somewhat meaningless as we are not stationary or epicentral. The whole universe is expanding (see Monty Python song for an excellent overview)and objects are moving away from each other - into what, is one of the great imponderables.
and the further away they are the faster they move ? "
Yes, as they are accelerating, so the furthest ones have reached the greatest velocity. It was thought that there would be enough mass in the universe for the expansion to be reversed at some point, by the mutual gravitational attraction of the mass, but the latest I read on this, now seems to suggest that the expansion is actually speeding up and that there is insufficient mass to stop it. Fascinating stuff |
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By *odareyouMan
over a year ago
not far from iceland,,,,,, tescos is nearer though :-) (near leeds) |
"No idea. And though when I listen to scientific explanations of the Big Bang Theory I can almost follow them, i do always think, "Erm, so something came out of nothing, but there was actually something there to begin with, so, erm, where did the something come from then? Eh? Tell me that?"
I guess it is that leap. Science can only provide theories to be disproved or refined, based on /observable phenomena.
I think an elephant with a tortoise on its back sharted into the cosmos.
what if Hubble is totally wrong?? "
Hubbles, wife says he s always wrong,,, |
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By (user no longer on site)
over a year ago
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Even the moon is reckoned to be moving away from us. At some half a foot a year so i believe.
So cunning plan for when i retire, i'm gonna move further up the hillside. |
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By (user no longer on site)
over a year ago
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"what would u like to know..I'm a wee geek x
it's a physics question,nothing about wee "
now if I had been talking about wee, as in urine, we may have actually created a new parallel timeline.
if U really wanna get bogged down in Heisenberg's uncertainty principle, or the anthropic principle... |
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By (user no longer on site)
over a year ago
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"redundant theory they dont think the big bang actually happened now 
who don't? "
Scientists... People like Professor Penrose....the multiverse is more en vogue now... There are other ideas too...
Some mathematicians have a problem with something that's infinitely dense but has zero volume...or something...
It all makes my head hurt.
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By (user no longer on site)
over a year ago
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BBC Horizon: What Happened Before the Big Bang?
http://m.youtube.com/playlist?list=PL71E2AB6469E5743F
Really interesting if you like this kinda stuff... |
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